It is an important strategic value to judge the conversion trend from the old kinetic energy to the new one all over the country and even in the region in promoting China's high quality economic growth.Based on the panel data samples of 30 provinces from 2001 to 2017 and from the perspective of supply side and demand side respectively,the conversion effect has been discussed in terms of from the factor-driven to the innovation-driven and from the external demand pull to the consumption upgrade based on the expansion of domestic demand applying the threshold model.The results show that the coastal areas and their national samples have demonstrated a significant conversion trend from the old kinetic energy to the new one on the supply side in the mass,but their conversion objectives have not yet been completed,while the inland areas still do not show the same conversiontrend on the supply side.The whole country even the coastal and inland areas have successfully achieved the conversion goal from the old kinetic energy to the new one on the demand side,and the consumption upgrading has become an important driving force for demandside economic growth.The completion of conversion targets on the supply side in coastal areas is better than that in inland areas,and it lags behind its demand side in the whole country even in the sub-regions.